#!/usr/bin/env bash
#
# Debian/Ubuntu Packaging Scripts
# Copyright (C) 2002-2020 by Thomas Dreibholz
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Contact: dreibh@iem.uni-due.de

# Bash options:
set -e


# ---------------------------------------------------------------------------
# USAGE:
# ./make-deb default            => for Ubuntu REVU
#    Note: Replaces "Maintainer" by Ubuntu Developers and
#          writes original maintainer entry to "XSBC-Original-Maintainer"
# ./make-deb unstable           => for Debian Mentors
# ./make-deb bionic|disco|...   => for Launchpad PPA
# ---------------------------------------------------------------------------


# Set current Debian debhelper version here
# for building unstable/testing/stable packages
# (See https://packages.qa.debian.org/d/debhelper.html for latest version!)
DEBHELPER_LATEST_VERSION="13"


# ====== Obtain package and version information =============================
DISTRIBUTIONS=`\
( \
while [ x$1 != "x" ] ; do \
   echo $1
   shift
done \
) | sort -u`
if [ "${DISTRIBUTIONS}" == "" ] ; then
   DISTRIBUTIONS="default"
fi


CHANGELOG_HEADER="`head -n1 debian/changelog`"

# The package name, e.g. MyApplication
PACKAGE=`echo ${CHANGELOG_HEADER} | sed -e "s/(.*//" -e "s/ //g"`
# The package distribution, e.g. precise, raring, ...
PACKAGE_DISTRIBUTION=`echo ${CHANGELOG_HEADER} | sed -e "s/[^)]*)//" -e "s/;.*//g" -e "s/ //g"`
# The package's version, e.g. 1.2.3-1ubuntu1
PACKAGE_VERSION=`echo ${CHANGELOG_HEADER} | sed -e "s/.*(//" -e "s/).*//" -e "s/ //g" -e "s/ //g" -e "s/^[0-9]://g"`
# The package's output version, e.g. 1.2.3-1ubuntu
OUTPUT_VERSION=`echo ${PACKAGE_VERSION}   | sed -e "s/\(ubuntu\|ppa\)[0-9]*$/\1/"`
# The package's Debian version, e.g. 1.2.3-1
DEBIAN_VERSION=`echo ${OUTPUT_VERSION}    | sed -e "s/\(ubuntu\|ppa\)$//1"`
# The package's upstream version, e.g. 1.2.3
UPSTREAM_VERSION=`echo ${DEBIAN_VERSION}  | sed -e "s/-[0-9]*$//"`
# The package's plain upstream version, e.g. 1.2.3 (without e.g. ~svn<xxxx>)
PLAIN_VERSION=`echo ${UPSTREAM_VERSION}   | sed -e "s/\([0-9\.]*\)[-+~].*$/\1/"`


echo -e "\x1b[34m######################################################################\x1b[0m"
echo -e "\x1b[34mCHANGELOG_HEADER:     ${CHANGELOG_HEADER}\x1b[0m"
echo -e "\x1b[34mPACKAGE:              ${PACKAGE}\x1b[0m"
echo -e "\x1b[34mPACKAGE_DISTRIBUTION: ${PACKAGE_DISTRIBUTION}\x1b[0m"
echo -e "\x1b[34mPACKAGE_VERSION       ${PACKAGE_VERSION}\x1b[0m"
echo -e "\x1b[34mOUTPUT_VERSION:       ${OUTPUT_VERSION}\x1b[0m"
echo -e "\x1b[34mDEBIAN_VERSION:       ${DEBIAN_VERSION}\x1b[0m"
echo -e "\x1b[34mUPSTREAM_VERSION:     ${UPSTREAM_VERSION}\x1b[0m"
echo -e "\x1b[34mPLAIN_VERSION:        ${PLAIN_VERSION}\x1b[0m"
echo -e "\x1b[34m######################################################################\x1b[0m"

if [ ! -e ./packaging.conf ] ; then
   echo >&2 "ERROR: packaging.conf does not exist -> no configuration for the new package!"
   exit 1
fi
. ./packaging.conf


# ====== Run warp-and-sort tool =============================================
if [ -e /usr/bin/wrap-and-sort ] ; then
   echo -e ""
   echo -e "\x1b[34m`date +%FT%H:%M:%S`: ====== Calling wrap-and-sort ==========================================\x1b[0m"
   echo -e ""
   wrap-and-sort -a -v
fi


# ====== Create upstream source package =====================================
echo -e ""
echo -e "\x1b[34m`date +%FT%H:%M:%S`: ====== Creating upstream package ======================================\x1b[0m"
echo -e ""
if [ "${SKIP_PACKAGE_SIGNING}" != "" -a ${SKIP_PACKAGE_SIGNING} -eq 1 -o "${OVERRIDE_SKIP_PACKAGE_SIGNING}" == "1" ] ; then
   ./make-upstream-package ${PACKAGE} ${UPSTREAM_VERSION} "${MAKE_DIST}" -skip-signing
else
   ./make-upstream-package ${PACKAGE} ${UPSTREAM_VERSION} "${MAKE_DIST}"
fi

for UPSTREAM_PACKAGE_TYPE in xz bz2 gz ; do
   UPSTREAM_PACKAGE="`find . -maxdepth 1 -name "${PACKAGE}-${UPSTREAM_VERSION}.tar.${UPSTREAM_PACKAGE_TYPE}" -printf '%f'`"
   if [ -e "${UPSTREAM_PACKAGE}" ] ; then
      break
   fi
done
if [ ! -e "${UPSTREAM_PACKAGE}" ] ; then
   echo -e "\x1b[34mERROR: No upstream package (${PACKAGE}-${UPSTREAM_VERSION}.tar.*) found!\x1b[0m"
   exit 1
fi


# ====== Build source packages ==============================================
echo -e ""
echo -e "\x1b[34m`date +%FT%H:%M:%S`: ====== Building source packages =======================================\x1b[0m"
for DISTRIBUTION in ${DISTRIBUTIONS} ; do

   updatedDebhelperVersion=0

   echo -e ""
   echo -e "\x1b[34m------ Creating package for ${DISTRIBUTION} ------\x1b[0m"

   cp ${UPSTREAM_PACKAGE} ${PACKAGE}_${UPSTREAM_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}
   cp ${UPSTREAM_PACKAGE} ${PACKAGE}_${OUTPUT_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}
   cp ${UPSTREAM_PACKAGE} ${PACKAGE}_${DEBIAN_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}
   if [ ! ${SKIP_PACKAGE_SIGNING} == "1" -a ! "${OVERRIDE_SKIP_PACKAGE_SIGNING}" == "1" ] ; then
      cp ${UPSTREAM_PACKAGE}.asc ${PACKAGE}_${UPSTREAM_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
      cp ${UPSTREAM_PACKAGE}.asc ${PACKAGE}_${OUTPUT_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
      cp ${UPSTREAM_PACKAGE}.asc ${PACKAGE}_${DEBIAN_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
   else
      rm -f ${PACKAGE}_${UPSTREAM_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
      rm -f ${PACKAGE}_${OUTPUT_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
      rm -f ${PACKAGE}_${DEBIAN_VERSION}.orig.tar.${UPSTREAM_PACKAGE_TYPE}.asc
   fi
   rm -rf ${PACKAGE}-${UPSTREAM_VERSION}
   rm -rf ${PACKAGE}-${UPSTREAM_VERSION}.orig
   if [ "${UPSTREAM_PACKAGE_TYPE}" == "gz" ] ; then
      tar xzf ${UPSTREAM_PACKAGE}
   elif [ "${UPSTREAM_PACKAGE_TYPE}" == "bz2" ] ; then
      tar xjf ${UPSTREAM_PACKAGE}
   elif [ "${UPSTREAM_PACKAGE_TYPE}" == "xz" ] ; then
      tar xJf ${UPSTREAM_PACKAGE}
   else
      echo 2>&1 "ERROR: Bad archive format: ${UPSTREAM_PACKAGE}"
      exit 1
   fi
   cp -r debian ${PACKAGE}-${UPSTREAM_VERSION}
   find ${PACKAGE}-${UPSTREAM_VERSION} -name .svn | xargs --no-run-if-empty rm -rf
   cd ${PACKAGE}-${UPSTREAM_VERSION}

   if [ "${DISTRIBUTION}" != "default" ] ; then
      if [ "${DISTRIBUTION}" == "unstable" -o "${DISTRIBUTION}" == "testing" -o "${DISTRIBUTION}" == "stable" ] ; then
         # Debian: Also remove Launchpad Bug IDs.
         sed -e "s/${PACKAGE_DISTRIBUTION};/${DISTRIBUTION};/1" \
             -e "s/\(ubuntu\|ppa\)[0-9]//1" \
             -e "/(LP: #/D" \
             <debian/changelog | ../filter-empty-entries "$DEBIAN_LAST_ENTRY" >debian/changelog.new
      else
         # Ubuntu PPA
         # Naming example: 2.7.7-0ubuntu1~natty1~ppa0
         # Ubuntu: Also remove Debian Bug IDs.
         sed -e "s/${PACKAGE_DISTRIBUTION};/${DISTRIBUTION};/1" \
             -e "s/${PACKAGE_VERSION}/${PACKAGE_VERSION}~${DISTRIBUTION}1~ppa0/1" \
             -e "/(Closes: #/D" \
             <debian/changelog | ../filter-empty-entries "$UBUNTU_LAST_ENTRY" >debian/changelog.new

         # ------ Old distributions not supporting c++/regex style symbols --
         if [ "${DISTRIBUTION}" == "dapper"   -o \
              "${DISTRIBUTION}" == "edgy"     -o \
              "${DISTRIBUTION}" == "feisty"   -o \
              "${DISTRIBUTION}" == "hardy"    -o \
              "${DISTRIBUTION}" == "intrepid" -o \
              "${DISTRIBUTION}" == "jaunty"   -o \
              "${DISTRIBUTION}" == "karmic"   -o \
              "${DISTRIBUTION}" == "lucid" ] ; then
            # Just skip the symbols ...
            find debian/ -maxdepth 1 -name "*.symbols" | xargs --no-run-if-empty rm -f
         fi
      fi

      # Remove additional newlines at the end of the file:
      sed -i -e :a -e '/^\n*$/{$d;N;};/\n$/ba' debian/changelog.new

      mv debian/changelog.new debian/changelog

      # ------ Old distributions not supporting new Debian format -----------
      if [ "${DISTRIBUTION}" == "dapper"   -o \
           "${DISTRIBUTION}" == "edgy"     -o \
           "${DISTRIBUTION}" == "feisty"   -o \
           "${DISTRIBUTION}" == "hardy"    -o \
           "${DISTRIBUTION}" == "intrepid" -o \
           "${DISTRIBUTION}" == "jaunty" ] ; then
         rm -rf debian/source
      fi

      # ------ Use latest Debhelper for Debian ------------------------------
      if [ "${DISTRIBUTION}" == "unstable" -o "${DISTRIBUTION}" == "testing" -o "${DISTRIBUTION}" == "stable" ] ; then
         # Update debhelper version:
         echo "${DEBHELPER_LATEST_VERSION}" >debian/compat
         sed -e "s/debhelper (.* [0-9]*)/debhelper (>= ${DEBHELPER_LATEST_VERSION})/g" <debian/control >debian/control.new
         # Newer debhelper does not need "--parallel" for building:
         sed -e "s/\(.*dh .. .*--buildsystem=cmake.*\)\(--parallel\)\(.*\)/\1\3/g" -e 's@[[:space:]]*$@@g' <debian/rules >debian/rules.new
         mv debian/control.new debian/control
         mv debian/rules.new debian/rules
         updatedDebhelperVersion=1
      fi

   else
      # Ubuntu: Remove Debian Bug IDs.
      sed -e "/(Closes: #/D" \
             <debian/changelog >debian/changelog.new
      mv debian/changelog.new debian/changelog
      sed -e "s/^Maintainer:/Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>\nXSBC-Original-Maintainer:/g" <debian/control >debian/control.new
      mv debian/control.new debian/control
   fi

   echo -e ""
   echo -e "\x1b[34m------ Creating diff file ${PACKAGE}-${PACKAGE_VERSION}.diff.gz ------\x1b[0m"
   (
      cd ..
      diff -urN "--exclude=*~" "--exclude=.svn" "--exclude=.git" \
         ${PACKAGE}-${UPSTREAM_VERSION}.orig ${PACKAGE}-${UPSTREAM_VERSION} \
         | gzip -c >${PACKAGE}-${PACKAGE_VERSION}.diff.gz
   )


   echo -e ""
   echo -e "\x1b[34m------ Building source package ------\x1b[0m"

   # Without signature:
   # debuild -us -uc
   # For sources:
   # debuild -S
   # For binaries:
   # debuild -b
   # Use -i to ignore .svn files!

   if [ "${SKIP_PACKAGE_SIGNING}" == "" ] ; then
      SKIP_PACKAGE_SIGNING=0
   fi
   if [ $updatedDebhelperVersion -eq 0 ] ; then
      opt=""
   else
      opt="--no-check-builddeps"   # Needed for increased debhelper version!
   fi
   if [ ${SKIP_PACKAGE_SIGNING} -eq 1 -o "${OVERRIDE_SKIP_PACKAGE_SIGNING}" == "1" ] ; then
      # Build source package without signature:
      debuild ${opt} -us -uc -S -i || exit 1
   else
      # Build source package including signature:
      if [ "${MAINTAINER_KEY}" == "" ] ; then
         echo >&2 "ERROR: MAINTAINER_KEY is not set!"
         exit 1
      fi
      debuild ${opt} -sa -S "-k${MAINTAINER_KEY}" -i || exit 1
   fi

   # Important: In /etc/pbuilderrc, set COMPONENTS="main universe"!
   # Important: After that, update with option "--override-config"!
   # sudo pbuilder update --override-config

   cd ..

   if [ "${DISTRIBUTION}" == "unstable" -o \
        "${DISTRIBUTION}" == "testing"  -o \
        "${DISTRIBUTION}" == "stable"   -o \
        "${DISTRIBUTION}" == "default" ] ; then
      if [ "${DISTRIBUTION}" == "default" ] ; then
         version=${PACKAGE_VERSION}
      else
         version=${DEBIAN_VERSION}
      fi
      dscFile=`ls ${PACKAGE}_${version}.dsc | tail -n1`
   else
      dscFile=`ls ${PACKAGE}_${PACKAGE_VERSION}~${DISTRIBUTION}[0-9]~ppa[0-9].dsc | tail -n1`
   fi
   if [ ! -e "${dscFile}" ] ; then
      echo -e "\x1b[34mERROR: ${dscFile} has not been generated successfully -> Aborting!\x1b[0m"
      exit 1
   fi

done


# ====== Show results =======================================================
echo -e ""
echo -e "\x1b[34m`date +%FT%H:%M:%S`: ====== Results overview ============================================\x1b[0m"
echo -e ""

echo -e "\x1b[34mUpload to PPA:\x1b[0m"
for DISTRIBUTION in ${DISTRIBUTIONS} ; do
   if [ "${DISTRIBUTION}" == "unstable" -o \
        "${DISTRIBUTION}" == "testing"  -o \
        "${DISTRIBUTION}" == "stable"   -o \
        "${DISTRIBUTION}" == "default" ] ; then
      if [ "${DISTRIBUTION}" == "default" ] ; then
         ppa="revu"
         version=${PACKAGE_VERSION}
      else
         ppa="mentors"
         version=${DEBIAN_VERSION}
      fi
      changesFile=`ls ${PACKAGE}_${version}_source.changes | tail -n1`
   else
      ppa="ppa"
      changesFile=`ls ${PACKAGE}_${PACKAGE_VERSION}~${DISTRIBUTION}[0-9]~ppa[0-9]_source.changes | tail -n1`
   fi
   echo -e "\x1b[34m   dput ${ppa} $changesFile\x1b[0m"
done
echo -e ""

if [ -e make-symbols ] ; then
   echo -e "\x1b[34m################################################################\x1b[0m"
   echo -e "\x1b[34mDo not forget to run make-symbols after library version changes!\x1b[0m"
   echo -e "\x1b[34m################################################################\x1b[0m"
   echo -e ""
fi

echo -e "\x1b[34mBuild Test Commands:\x1b[0m"
for DISTRIBUTION in ${DISTRIBUTIONS} ; do
   if [ "${DISTRIBUTION}" == "unstable" -o \
        "${DISTRIBUTION}" == "testing"  -o \
        "${DISTRIBUTION}" == "stable"   -o \
        "${DISTRIBUTION}" == "default" ] ; then
      if [ "${DISTRIBUTION}" == "default" ] ; then
         version=${PACKAGE_VERSION}
      else
         version=${DEBIAN_VERSION}
      fi
      changesFilesPattern="${PACKAGE}_${version}_*.changes"
      dscFile=`ls ${PACKAGE}_${version}.dsc | tail -n1`
   else
      changesFilesPattern="${PACKAGE}_${PACKAGE_VERSION}~${DISTRIBUTION}[0-9]~ppa[0-9]_*.changes"
      dscFile=`ls ${PACKAGE}_${PACKAGE_VERSION}~${DISTRIBUTION}[0-9]~ppa[0-9].dsc | tail -n1`
   fi
   profile="ubuntu"
   if [ "${DISTRIBUTION}" == "unstable" -o \
        "${DISTRIBUTION}" == "testing"  -o \
        "${DISTRIBUTION}" == "stable" ] ; then
      profile="debian"
   fi
   echo -e "\x1b[34m   sudo pbuilder build ${dscFile} && lintian -iIEv --profile ${profile} --pedantic /var/cache/pbuilder/result/$changesFilesPattern\x1b[0m"
done
echo -e ""
